Door-securing device



ring the entrance of an unauthorized person even when the door ispartially opened. The limited opening of the door also permitsobservation of a person seeking admission without unfastening the doorto an extent such as to afford an opportunity to force an entry when thedoor is unlatehed, thus affording safety to a person Who otherwise mightbe overpowered by an intruder. It will be noted that the knob is readilyturnable Within the member 4 to permit the unlatching of the doorwithout displacing the securing devicegmdY also that the member 4 iseifectually held in operative engagement with the knob untilintentionally released and moved from inside of the door to aninoperative position. The plurality of hinged links affords compactnessand insures a positive engagement with the knob While permitting alimited opening of the door.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is- 1. A door securing device comprisingahaspconsisting of an apertured member arranged to be moved over the doorknob of a door; a jamb plate arranged to be secured upon the door j ambadjacent the knob; a pair of links pivotally connected at their adjacentends and pivotally connected at their opposite ends to the aperturedmember and the jamb plate respectively, said links being movable toproximate matching relation against said jamb plate to permit theapertured member to be folded back against the jamb into inoperativeposition, said links also being adapted to e extended to permit saidapertured member to be moved into engagement With the knob and permit alimited opening only of the door.

2. A door securing device comprising a hasp consisting of an aperturedmember arranged to be moved over the door knob of a door; a jamb platearranged. to be secured upon the door jamb adjacent the knob; a pair oflinks hingedly connected at adjacent ends and pivotally connected attheir opposite ends to the apertured member and the jamb platerespectively, said links being movable to proximate matching relationagainst the jamb plate to permit the apertured member to be folded backagainst the jamb into inoperative position, said links also beingadapted to be extended to permit said apertured member to be moved intoengagement with the knob and permit a limited opening only of the door;and means for normally moving the links in a direction away from theknob.

3. A door securing device comprising a hasp consisting of an aperturedmember ar ranged to be moved over the knob of a door; a jamb platearranged to be secured upon the door jamb adjacent the knob; linkshingedly connected between the apertured member and the jamb plate andarranged to permit the apertured member to be folded back against theamb into inoperative position and to be extended into engagement withthe knob7 said links being arranged to permit a limited opening of thedoor; and a spring mounted in connection With the jamb plate and theadjacent link and normally exerting a pressure tending to move said linkin a direction away :from the knob.

4. A door securing device comprising the combination Wit-h the knob andjamb of a door, of a hasp comprising an apertured member arranged to bemoved over the knob; a jamb plate secured upon the jamb adjacent theknob; and a pair of links hingedly connected to each other and to theapertured member and sash plate to permitthe apertured member to befolded back against the jamb into inoperative position and to becxtended into engagement with the knob, said links being arranged topermit a limited opening of the door.

In Witness whereof, I hereunto set my signature.

ELLING ELLINGSON.

